Item Coding - Handling Item Labels and Column IDs
Description Usage Arguments Value Author(s) See Also Examples
Provides the generic function itemFrequency and S4 methods to get the
frequency/support for all single items in an objects based on
itemMatrix. For example, it is used to get the single
item support from an object of class transactions
without mining.
1 2 3 4 | itemFrequency(x, ...)
## S4 method for signature 'itemMatrix'
itemFrequency(x, type, weighted = FALSE)
|
x |
an object. |
... |
further arguments are passed on. |
type |
a character string specifying
if |
weighted |
should support be weighted by transactions weights stored
as column |
itemFrequency returns a named numeric vector. Each element is the
frequency/support of the corresponding item in object x. The items
appear in the vector in the same order as in the binary matrix in x.
Michael Hahsler
itemFrequencyPlot,
itemMatrix-class,
transactions-class
1 2 | data("Adult")
itemFrequency(Adult, type = "relative")
|
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